Double Fortified Salt

Double Fortified Salt is an innovative new fortified food product delivering small but crucial amounts of iodine and iron to human beings through their diet. Salt has been the vehicle for the world’s most successful food fortification initiative to date Universal Salt lodization.

The fortification of salt with iodine has been hailed as one of the world’s great public health advancements. Now breakthrough technology that allows salt to be double fortified with iron as well as iodine has created an exciting new opportunity to reach the world with supplemental iron easily and inexpensively, without having to change people’s habits. Billions of people are affected by the hidden hunger of micronutrient deficiencies

Double Fortified Salt presents one of the most cost-effective opportunities to deliver two of the most critical micronutrients for mental capacity, maternal and infant survival and human productivity.

Process Description

DFS is prepared with adequately iodised salt further fortified with iron either in the form of encapsulated ferrous fumerate or Ferrous Sulphate. The production process of DFS with Ferrous Sulphate is developed by National Institute of Nutrition (NIN), Hyderabad, the process of production of DFS with encapsulated ferrous fumerate is developed by University of Toronto Canada.

The process of double fortification of salt requires just one additional step to current salt refineries producing refined/crushed dried iodized salt. This step involves the preparation of a rich mix of the encapsulated iron premix with a small quantity of salt followed by mixing this rich mix with the bulk of the salt in the required proportion in a ribbon blender.

The proportion of encapsulated iron premix to salt is approximately 5.5 kg/Ton of salt. DFS is essentially organoleptically indistinguishable from iodized salt in appearance, taste or smell. This formulation can only work well with salt of the same particle size, 300-700µm, without the problem of segregation. Iron premix with relatively smaller size would adhere to the surface of salt particles. The layer has an optimal thickness (of only a few microns) that protects the iron until it is ingested, and passes through the stomach, and reaches an optimal point in the gastrointestinal tract where the encapsulant disintegrates, enabling the absorption of iron
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